Purpose -We conduct a hypothetical dictator game with social distance and time delays using conjoint analysis.Design / methodology / approach -Responses from 1,347 Japanese adults are collected through an online survey, and their responses are analyzed using a random parameter logit model. Originality / value-We simultaneously estimate social preference parameters including the inequality aversion rate, the social discount rate, and the time discount rate Headings -Inequality aversion, social discount, and time discount Keywords -dictator game, inequality aversion, social discounting, time discounting Originality / value-We simultaneously estimate social preference parameters including the inequality aversion rate, the social discount rate, and the time discount rate Headings -Inequality aversion, social discount, and time discount